Were the Valiants and Darts exported to Sweden with left-hand or right-hand drive? I read recently that the whole country switched from driving on the left side to the right side of the road on a single day, in about 1969.
The Swedes had a good reason for switching to drive on the "normal" side of the road. You see, they were driving on the left side but with left hand drive cars. That's not very practical but then they never were too bright :D (I'm allowed to say that as I'm from the country next door).
To answer your question, they sold a huge number of Valiants in Sweden in the 60's and they were all left hand drive vehicles.